On all iPhone 15 models, Apple has made it possible to check the number of completed battery cycles, which is a valuable metric to determine your device's battery condition.

iPhone 15 General Feature Blue
Previously, finding out an iPhone's battery cycle count was not an option in Apple's mobile operating system, and curious users had to resort either to unofficial methods (via third-party apps like CoconutBattery, for example) or copy-pasting analytics into Notes and searching for "last_value_CycleCount."

While it has been possible to ascertain iPhone battery health for several years via the "Maximum Capacity" percentage (Settings -> Battery -> Battery Health & Charging), a charge count is a valuable additional metric to determine battery health. A charge cycle is registered every time you deplete all of the battery's capacity, which degrades over time. From Apple's battery information webpage:

Apple lithium-ion batteries work in charge cycles. You complete one charge cycle when you've used (discharged) an amount that equals 100% of your battery's capacity — but not necessarily all from one charge. For instance, you might use 75% of your battery's capacity one day, then recharge it fully overnight. If you use 25% the next day, you will have discharged a total of 100%, and the two days will add up to one charge cycle. It could take several days to complete a cycle. The capacity of any type of battery will diminish after a certain amount of recharging. With lithium-ion batteries, the capacity diminishes slightly with each complete charge cycle.

Checking iPhone 15 Battery Cycle Count

  1. Open the Settings app.
  2. Tap General -> About.
  3. Scroll down to the "Battery" section and check the number next to Cycle Count.

settings

On iPhone 15, you can also set a hard 80% limit on battery charging, which can improve battery lifespan by reducing the time that the battery is fully charged. Be sure to check out our dedicated how-to article to learn how.

Related Roundups: iPhone 15, iPhone 15 Pro
Related Forum: iPhone

Popular Stories

new best buy blue

Best Buy's Memorial Day Sale Has Record Low Prices on iPads, MacBooks, and Much More

Friday May 24, 2024 7:12 am PDT by
Best Buy today kicked off its Memorial Day weekend sale, and it has some of the best prices we've tracked in weeks on iPads and MacBooks. Specifically, you'll find record low prices on the 5th generation iPad Air, iPad mini 6, M2 MacBook Air, and M3 MacBook Pro. Note: MacRumors is an affiliate partner with Best Buy. When you click a link and make a purchase, we may receive a small payment,...
macOS 15 Feature

macOS 15 System Settings to Get Design Overhaul

Thursday May 23, 2024 12:51 pm PDT by
With the macOS 15 update that is set to debut at WWDC in June, Apple plans to rearrange "menus and app UIs," according to a report from AppleInsider. The System Settings app, which was last updated with macOS Ventura, will get one of the biggest updates. With macOS Ventura, Apple renamed the System Preferences app to System Settings, introducing a design similar to the Settings app on the...
6chatgpt mac app

5 Reasons to Use OpenAI's ChatGPT App for Mac

Thursday May 23, 2024 6:07 am PDT by
On May 13, OpenAI during its Spring Update announced that it would be releasing a desktop ChatGPT app for the Mac in the "coming weeks," and said that ahead of a wider launch it had started rolling out the app to some ChatGPT Plus subscribers. Subscribe to the MacRumors YouTube channel for more videos. After testing the app for a few days, we thought it was worth sharing some reasons why...
iOS 17

Apple Sheds More Light on iOS 17.5 Bug That Resurfaced Deleted Photos

Friday May 24, 2024 2:36 am PDT by
Last week, some iPhone users reported that Apple's iOS 17.5 update had introduced a bug that caused old photos that were deleted to reappear in the Photos app. Apple quickly released an iOS 17.5.1 update to fix the issue, but for many users, its explanation of "database corruption" in the release notes was all too brief, and did little to allay concerns about the privacy of their data. Apple ...